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The survey of 2717 horse owners, 56% of which were leisure owners and 35% professionals, found that most horses (62%) were retired between 15-24 years of age, mainly for health reasons.
Mares had a higher risk of retirement than geldings, which the researchers say may be due in part to mares used for breeding not doing much structured exercise.
Just over 1 in 6 horses in the study were affected by low muscle mass according to their owners.
Age, sex, osteoarthritis, laminitis, pituitary pars intermedia dysfunction (PPID), and primary use were identified as risk factors for low muscle mass.
Geldings had a higher risk of low muscle mass than mares, which the researchers say may be a result of low testosterone.
Horses with owner-reported veterinary-diagnosed PPID, osteoarthritis and laminitis had a higher risk of low muscle mass.
Primary use was identified as a risk factor for low muscle mass, with retired horses having a higher risk than horses used for competition or pleasure riding.
Owner-reported low muscle mass was perceived to affect welfare and the ability to work in the majority of senior horses.
Alisa Herbst, who led the study, said: “A prolonged working/active life may not only be desired by owners but is also likely to provide health and welfare benefits to the horse.
"We hope the results of this study may be useful for veterinarians caring for senior and geriatric equines, by helping to achieve this."
“The information may aid in the investigation of diseases affecting senior horses and in establishing senior horse-owner education programs.
"The low muscle mass risk factor list may assist vets in identifying horses at risk of low muscle mass to be selected for close monitoring.
“Vets may also consider inclusion of an objective measurement of muscle atrophy, such as the muscle atrophy scoring system (MASS)***, in annual wellness exams, so that atrophy can be identified and managed as early as possible."
Sarah Nelson, Product Manager at Mars Horsecare added: “This survey has highlighted several interesting retirement trends.
“With a better understanding of when and why senior horses are being retired we hope, eventually, to be better placed to monitor for, prevent (where possible), and treat the underlying conditions early on, to help horses stay active and healthy for longer.”
https://www.seniorhorsehealth.com
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